Can you enter something or does it just give you an error? Have you tried another Sim?

Yes it asks for 8 Digit code. whatever i enter it says accepted successfully then device restarts and ask for the code again and i con do nothing .
if i do not enter the sim card then i can freely navigate anywhere in the device.
orignaly it was not a locked cell.
is there any Hboot and Rom compatibility issue?
My current Hboot version is 1.44 whereas previous version was higher.

Yes it asks for 8 Digit code. whatever i enter it says accepted successfully then device restarts and ask for the code again and i con do nothing .
if i do not enter the sim card then i can freely navigate anywhere in the device.
orignaly it was not a locked cell.
is there any Hboot and Rom compatibility issue?
My current Hboot version is 1.44 whereas previous version was higher.

That's strange. Are you s-off now? If so, you could flash the latest firmware and reflash your Rom. Just to make sure the problem is not caused by your current software configuration
Edit: "fastboot getvar all" please

Hi
I have the same problem with an HTC One M7 802t
After triyng to load EngHboot my device gone Black Screen. I tried the RUU update by I get the battery under 30% error, although the phone was 98% charged.
I can connect via fastboot, i managed to put old hboot, the phone is still Black screen but now donn't want to flash anything anymore, because the original hboot goes locked. I saw the EngHboot erased also all the phone infos. Here are getvar results

Now the problem is that I cant unlock the hboot because the missing serial no. When I put token to htcdev.com I get the error: "token information incomplete (SN)"
Because the hboot are Locked, I can't write any update via fastboot commands.
Is any posibility to unlock bootloader without SN ? Is any possibility to rewrite the SN wit hboot lock (the phone is still S-OFF).
Because the phone don't start and adb driver don' load, I cant use adb mode
The only commands works via fastboot and stock hboot commands.
I cant put also the phone in RUU mode. When I try "fastboot rebootRUU" phone goes dead and I must press PWR button 20 seconds to reconect in fastboot mode.

That's strange. Are you s-off now? If so, you could flash the latest firmware and reflash your Rom. Just to make sure the problem is not caused by your current software configuration
Edit: "fastboot getvar all" please

Version-main is strange. Haven't even seen this firmware version. What you can do: s-off your device using revone and flash latest firmware (contains new bootloader, radio etc.) or run an RUU for your CID. That should fix your problem

Version-main is strange. Haven't even seen this firmware version. What you can do: s-off your device using revone and flash latest firmware (contains new bootloader, radio etc.) or run an RUU for your CID. That should fix your problem

That is because eng hboot. It has rewrite the phone info.
I had the same problem.

/revone isn't working because cant use adb commands. The phone will not entering in rebootRUU mode also

only working command are through fastboot. An because the bootloader are locked, cant flash any file via fastboot.
When attempt to unlock this version of hboot the token will get is incomplet and htcdev.com cannot proces the unlock code.

We need a solution to bypass security of bootloader via fastboot commands only and is not dependent of complete token information.

Version-main is strange. Haven't even seen this firmware version. What you can do: s-off your device using revone and flash latest firmware (contains new bootloader, radio etc.) or run an RUU for your CID. That should fix your problem

i flashed the RUU but no luck.
but i realized that after jtag imei is changed,
how can i change current imei to my original imei?

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